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Alexey Pajitnov created Tetris with the help of Dmitry Pavlovsky and Vadim Gerasimov in 1984. The game, first available in the Soviet Union, appeared in the West in 1986.

Pajitnov also created the lesser known sequel to Tetris, entitled Welltris, which has the same principle but in a three dimensional environment where the player sees the playing area from above.[2]Tetris was licensed and managed by Soviet company ELORG which had been founded specially for this purpose, and advertised with the slogan "From Russia with Love" (on NES: "From Russia With Fun!"). Because he was employed by the Soviet government, Pajitnov did not receive royalties.